Display apparatus, and control method thereof

Inactive Publication Date: 2008-02-28
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]Accordingly, the present invention provides a display apparatus, and a control method thereof, which can uniformly output a luminance level of a received video signal without a loss of a corresponding contrast ratio.
[0021]The controller may recalibrate the luminance levels by section to prevent a difference between luminance levels corresponding to a section and its neighbor section, respectively, from being larger than a threshold range.

Problems solved by technology

Accordingly, a discrepancy between the video signal and the DICOM curve is generated in another area that is calibrated without measuring a corresponding luminance level, and thus the corresponding luminance level may not be uniformly output by area.
Accordingly, if a corresponding calibration process is performed with a corresponding calibration coefficient, the calibration process cannot meet the DICOM curve.

Method used

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  • Display apparatus, and control method thereof
  • Display apparatus, and control method thereof
  • Display apparatus, and control method thereof

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Embodiment Construction

[0028]Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

[0029]Hereinafter, an exemplary embodiment of the present invention will be described with reference to FIG. 1.

[0030]FIG. 1 is a control block diagram illustrating a display apparatus according to an exemplary embodiment of the present invention. As illustrated, the display apparatus includes a signal input part 10, a signal processing part 20, a display part 30, and a controller 40. The display part 30 may be divided into multiple sections (for example, a first section, a second section, and a third section) as described in more detail below.

[0031]The signal input part 10 receives a video signal and a synchronizing signal. Herein, the signal input part 10 includes a tuner (not shown) to receive a broadcast signal, and an external connecting port (not shown) to r...

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PUM

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Abstract

A control method and a display apparatus are provided. The control method includes dividing a display part into sections; detecting output luminance levels which correspond to grayscale levels of an input video signal on a section by section basis; converting the output luminance levels by calculating calibration coefficients on a section by section basis and applying the calculated calibration coefficients to the respective detected output luminance levels to control respective maximum luminance levels of the detected output luminance levels to be a permitted luminance level; and setting up a calibration table based on the respective converted luminance levels and a reference luminance level. The display apparatus includes a display part which comprises a plurality of sections; a signal processing part; and a controller which detects output luminance levels on a section by section basis, converts the output luminance levels, and sets up a calibration table.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority from Korean Patent Application No. 10-2006-0079439 filed on Aug. 22, 2006, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]Methods and apparatuses consistent with the present invention relate to a display apparatus, and a control method thereof, and more particularly, to a display apparatus, and a control method thereof, which can uniformly output a luminance level of a received video signal.[0004]2. Description of the Related Art[0005]Generally, if a video signal is received, a display apparatus processes the video signal to provide the processed video signal to a display module unit, and the display module unit displays a corresponding video on a display part. At this time, a luminance deviation may occur between different areas displayed on the display part due to electrical, ph...

Claims

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Application Information

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IPC IPC(8): H04N5/335
CPCG09G3/20G09G2320/0233G09G2320/0271H04N17/04G09G2360/16H04N5/20G09G2320/0626H04N5/57
InventorPARK, JI-YONGIM, SANG-KYUNCHO, MYUNG-JINANUFRIENKO, ALEXANDER
OwnerSAMSUNG ELECTRONICS CO LTD